---
title: "Window Locks — $1.2M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/window-locks"
last_updated: "2026-08-07T11:05:12.382Z"
locale: en
meta:
description: "Niche score 55/100 · $1.2M/yr market · 1.5M searches/yr · $11.53 avg price. High returns (4.3%) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $1.2M/yr market · 1.5M searches/yr · $11.53 avg price. High returns (4.3%) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Window Locks — $1.2M/yr Amazon US Niche (2026) - Flapen"
---
# **window locks**
**Worth a look**
Shows a $1.2M/yr market, but high returns (4.3%) keeps it on the watch list.
Market size 82Growth 46Conversion 76Competition 45Returns 33Price range 59Avg price 46Brand share 48Review moat 39Quality gap 60
**Market size**
**Great****$1.2M**
$1.2M/yr · 1.5M searches
**Conversion**
**Great****7.2%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Price range**
**Good****$4.27–$30.56**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Brand share**
**Okay****76%**
top-5 brand share — brands hold most of the demand
**Growth**
**Okay****+17.1%**
90-day search growth — must beat 0% to launch
**Avg price**
**Okay****$11.53**
avg listing price — sweet spot $15–$100
**Competition**
**Okay****58%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Okay****2,597.48**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Okay****4.3%**
return rate — above 5% kills the launch gate
According to Flapen's Amazon United States niche tracking, window locks is a $1.2M/yr Amazon United States market (1.5M searches/yr). The top 5 brands hold 76% of demand. Verdict: Worth a look — 55/100.
Data updated Jul 27, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **window locks market data**
- **Units sold / yr**
- **100K–125K**
- avg 3,000–4,000/product
- **Revenue / yr**
- **$1.2M–$1.4M**
- units × avg price
- **Conversion rate**
- **7.2%**
- **Avg BSR**
- **#32**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **80%**
- **Out of stock**
- **4.6%**
- **Avg brand age**
- **43 months**
- **Avg seller age**
- **168 days**
## **Competition & brand share**
The top 5 products take 58% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**17 **▼falling
**Sellers**
**42**
**Top-5 brand share**
**76%**
Top 20: 100%
**Top-5 click share**
**58%**
Top 20: 95%
**Open market**
**20%**
- HYIEOU20% - ZRFCXE19% - PRIME-LINE17% - Shop Square11% - STERGDE8% - Toddleroo by North States4%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +17.1% search growth over the last 90 days.
35K25KSpike '25Spike '26 seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/window-locks/trend)
## **Top window locks search terms**
- **window locks**491K/yr+11.8%5.7% conv. - **window locks for up and down windows**228K/yr+18.0%5.3% conv. - **window lock**186K/yr+25.0%6.2% conv. - **sliding window locks**90K/yr+34.6%6.3% conv. - **window stopper**73K/yr+33.9%4.1% conv. - **window security**86K/yr-11.6%1.5% conv. - **window locks child proof**42K/yr+12.5%6.6% conv. - **window locks for horizontal sliding windows**50K/yr+44.3%5.9% conv. - **sliding window lock**31K/yr+31.0%5.1% conv. - **window safety locks**32K/yr+16.9%3.5% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/window-locks/search-terms)
## **Top window locks products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%5%$62K10%$125K15%$187K20%$250K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**HYIEOU Sliding Window Locks (2 Sets) Secure Window Lock with Key Window Locks for Up and Down Windows & Horizontal Sliding Windows Adjustable Window Lock Sturdy and Durable Does Not Deform.**HYIEOU**$8.05**4.6★1,258 rev](https://www.amazon.com/dp/B0F4CZGMBW) [2**ZRFCXE Window Locks 4 Pack Sliding Window Locks with Key for Vertical & Horizontal Sliding Windows Doors Easv to Install Adjustable Security Window Lock for Patio Bedroom Home and Office (Black)**ZRFCXE**$10.06**4.5★4,815 rev](https://www.amazon.com/dp/B0DBV8T3RB) [3**Prime-Line U 9819 Aluminum Sliding Window Security Lock (4 Pack)**PRIME-LINE**$4.27**4.4★11,731 rev](https://www.amazon.com/dp/B00BAFIQF0) [4**Window Locks 10 Pack for Vertical and Horizontal Windows Adjustable Aluminum Stoppers Window Security No-Drill Install Requires 28-36mm Clearance**Shop Square**$10.31**4.2★1,197 rev](https://www.amazon.com/dp/B0BTKJPSCF) [5**Sliding Window Locks (4 Sets) Security Window Locks with Keys Adjustable Aluminum Sliding Window Stops Easy Installation Without Drilling for Vertical and Horizontal Sliding Windows (Silver)**STERGDE**$9.80**4.6★1,346 rev](https://www.amazon.com/dp/B0FBMGS3QF)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Sliding Window Locks with Key (4 Sets) Window Locks for Up and Down Windows and Horizontal Sliding Windows Window Stopper Easy to Install Without Drilling for Homes Apartments and Hotels(Silver)**ZRFCXE**$9.87**36 rev4mo ago](https://www.amazon.com/dp/B0GRPDNRDF) [**Window Locks(4 Sets) Window Locks for Up and Down Windows Easy to Install Vertical & Horizontal Window Security Locks Adjustable Aluminum Window Stopper Lock(Silver)**BMEWKOS**$6.94**872 rev7mo ago](https://www.amazon.com/dp/B0G4JTPBRK) [**4 Pack Sliding Window Locks Aluminum Security Locks for Sliding Windows & Doors Easy to Install**Sweet Online Deal**$5.21**63 rev1y ago](https://www.amazon.com/dp/B0FG9NG2RY) [**Nuk3y Sliding Window Security Locks (Aluminum 12 Pack)**NUK3Y PRODUCTS K3**$9.85**124 rev1y ago](https://www.amazon.com/dp/B0FBHRHH4G) [**12PCS Sliding Window Locks Aluminum Security Locks for Sliding Windows**THE UM24**$10.79**125 rev1y ago](https://www.amazon.com/dp/B0DY4KWR5R)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Sliding Window Locks with Key (4 Sets) Window Locks for Up and Down Windows and Horizontal Sliding Windows Window Stopper Easy to Install Without Drilling for Homes Apartments and Hotels(Silver)**ZRFCXE**$9.87**4.6★**▲ 222%**](https://www.amazon.com/dp/B0GRPDNRDF) [**Window Locks(4 Sets) Window Locks for Up and Down Windows Easy to Install Vertical & Horizontal Window Security Locks Adjustable Aluminum Window Stopper Lock(Silver)**BMEWKOS**$6.94**4.4★**▲ 165%**](https://www.amazon.com/dp/B0G4JTPBRK) [**HYIEOU Sliding Window Locks (6 Sets) Secure Window Lock with Key Window Locks for Up and Down Windows & Horizontal Sliding Windows Adjustable Window Lock Sturdy and Durable Does Not Deform.**HYIEOU**$15.86**4.6★**▲ 76%**](https://www.amazon.com/dp/B0D4TS1W2B) [**Nuk3y Sliding Window Security Locks (Aluminum 12 Pack)**NUK3Y PRODUCTS K3**$9.85**4.2★**▲ 52%**](https://www.amazon.com/dp/B0FBHRHH4G) [**Prime-Line U 9823 Aluminum White Finish Sliding Window Security Lock (4 Pack)**PRIME-LINE**$5.38**4.4★**▲ 36%**](https://www.amazon.com/dp/B00BAFIT7A)
**~~View all trending →~~**
## **What buyers say about window locks**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Locking Mechanism**14%
*“The locks work well”*
**Assembly/Installation**13%
*“Very easy to assemble”*
**Quality-Overall**12%
*“Amazing quality”*
**Ease Of Use**9%
*“Easy Peasy”*
**Advertised Vs Actual Product**9%
*“As advertised”*
**Strength**7%
*“Easy installation and it seems pretty sturdy so far”*
**Security**7%
*“Great security”*
**Value For Money**6%
*“great value for money”*
**Efficiency**6%
*“it does the job”*
**Size-Overall**3%
*“Easy fit”*
### **What buyers complain about **
**Size-Overall**22%
*“Does not fit”*
**Durability**9%
*“Breaks Easily”*
**Locking Mechanism**8%
*“The locks are made of cheap”*
**Functionality-Overall**7%
*“Didn't work”*
**Compatibility-Overall**5%
*“Couldn't use on my windows”*
**Quality-Overall**5%
*“Cheaply made”*
**Ease Of Use**4%
*“difficult to use”*
**Strength**4%
*“They break easily”*
**Thickness**3%
*“My window was to thick”*
**Assembly/Installation**2%
*“It is not common sense for someone who does not know how to install things”*
### **Top return reasons **
**Size-Overall**44%
**Compatibility-Overall**16%
**Advertised Vs Actual Product**8%
**Functionality-Overall**8%
**Locking Mechanism**6%
**Thickness**3%
**Defective Material/Parts**2%
**Mechanism Issues**2%
**Value For Money**2%
**Adhesion/Stickiness**1%
## **Common questions**
- **Is window locks profitable to sell on Amazon United States?**
- The niche generates $1.2M/yr across 25 tracked products. 1 of 3 products launched in the last 360 days are still selling. 90-day search growth is +17.1%. Flapen's verdict: Worth a look (55/100).
- **How competitive is the window locks niche?**
- 17 brands and 42 sellers compete. The top 5 products take 58% of clicks and top 5 brands hold 76% of demand.
- **What do buyers complain about in window locks?**
- Top complaints mined from reviews: Size-Overall, Durability, Locking Mechanism. The return rate is 4.3%.
- **When does demand for window locks peak?**
- Demand is steady year-round — the busiest month runs 1.8× the quietest.
- **What does it cost to enter the window locks niche?**
- Listings span $4.27–$30.56; the average listing price is $11.53 (sweet spot $15–$100). The average incumbent carries 2,597 reviews — the moat a new listing must climb.
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